Compress HEIC Images for websites
Web image optimization is one of the highest-impact improvements for site speed, Google Core Web Vitals scores, and organic SEO rankings. High Efficiency Image Format — the default photo format on iPhones and modern Apple devices. Excellent compression. Use ImageSmith to compress your HEIC images to the ideal file size for websites — target under 200KB for optimal performance. Processing is fully browser-based — no server uploads, no privacy risk.
Recommended format
WebP
Max file size
200KB
Dimensions
Match display dimensions — use responsive images with srcset
✓Target under 200KB for hero/banner images, under 100KB for thumbnails
✓Use WebP or AVIF for the best compression-to-quality ratio
✓Implement lazy loading: add loading="lazy" to non-critical images
✓Use Next.js Image component or similar for automatic optimization